Big Ideas

In this unit, students learn about scaling, dilations, and similarity of figures. They understand terms like "scaled copy," "scale factor," and "dilation" to identify scaled figures. They use tables to analyze measurements and interpret scale drawings. Students explore dilations with a center and scale factor, preserving angles but scaling lengths. They also use rigid transformations to determine similarity between figures. The concept of slope and slope triangles is introduced to show that any two points on a line have the same slope.

Topics

1. Scaled Copies (L 1-3)

2. Scaled Drawings (L 4-7)

3. Dilations (L 8-10)

4. Similarity (L 11-14)

5. Slope (L 15-17)